A new math model shows how very condensed spacetime could be part of general relativity. The early universe and compact neutron stars both exemplify these exotic spacetimes. Exotic spacetimes show ...
Two weeks ago, a modest-looking paper was uploaded to the arXiv preprint server with the unassuming title "On the invariant subspace problem in Hilbert spaces". The paper is just 13 pages long and its ...
Sure, you can cut a pie into pieces, but what if it’s in four dimensions? Using spectral graph theory, mathematicians have solved a decades-old problem. Graph theory uses nodes and edges (dots and ...
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